1 // Copyright 2014 The go-ethereum Authors
2 // This file is part of the go-ethereum library.
4 // The go-ethereum library is free software: you can redistribute it and/or modify
5 // it under the terms of the GNU Lesser General Public License as published by
6 // the Free Software Foundation, either version 3 of the License, or
7 // (at your option) any later version.
9 // The go-ethereum library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU Lesser General Public License for more details.
14 // You should have received a copy of the GNU Lesser General Public License
15 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
29 "github.com/bytom/common"
30 "golang.org/x/crypto/ripemd160"
31 "golang.org/x/crypto/sha3"
34 func Sha256(data ...[]byte) []byte {
36 for _, b := range data {
42 func Sha256Hash(data ...[]byte) (h common.Hash) {
44 for _, b := range data {
51 func Sha3(data ...[]byte) []byte { return Sha256(data...) }
52 func Sha3Hash(data ...[]byte) common.Hash { return Sha256Hash(data...) }
54 func Ripemd160(data []byte) []byte {
55 ripemd := ripemd160.New()
58 return ripemd.Sum(nil)
61 func PubkeyToAddress(pubBytes []byte) common.Address {
62 address, _ := common.AddressEncode("bm", 1, toInt(Ripemd160(Sha3(pubBytes))))
64 return common.StringToAddress(address)
67 func AddressToPubkey(addr common.Address) (int, []byte, error) {
68 ver, data, err := common.AddressDecode("bm", addr.Str())
69 return ver, toBytes(data), err
72 func zeroBytes(bytes []byte) {
73 for i := range bytes {
78 func toInt(bytes []byte) []int {
79 ints := make([]int, len(bytes))
80 for i := range bytes {
81 ints[i] = int(bytes[i])
86 func toBytes(ints []int) []byte {
87 bytes := make([]byte, len(ints))
89 bytes[i] = byte(ints[i])